28496871 has 24 divisors (see below), whose sum is σ = 44649696. Its totient is φ = 17409600.

The previous prime is 28496869. The next prime is 28496873. The reversal of 28496871 is 17869482.

It is an interprime number because it is at equal distance from previous prime (28496869) and next prime (28496873).

It is not a de Polignac number, because 28496871 - 2¹ = 28496869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28496873) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16861 + ... + 18473.

It is an arithmetic number, because the mean of its divisors is an integer number (1860404).

Almost surely, 2^28496871 is an apocalyptic number.

28496871 is a deficient number, since it is larger than the sum of its proper divisors (16152825).

28496871 is a wasteful number, since it uses less digits than its factorization.

28496871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1783 (or 1780 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 28496871 is about 5338.2460602711. The cubic root of 28496871 is about 305.4445581971. Note that the first 3 decimals are identical.

The spelling of 28496871 in words is "twenty-eight million, four hundred ninety-six thousand, eight hundred seventy-one".